var video = document.getElementsByClassName("video1")[0];
var playPause = function () {
  if (video.paused) {
    video.play();
  } else {
    video.pause();
  }
};

var comment = document.getElementsByClassName("comment")[0];
var com = document.getElementsByClassName("com")[0];

comment.onclick = function (e) {
  com.style.height = "800px";
};
